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IL-17a

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https://www.readbyqxmd.com/read/29331687/probiotics-bacillus-toyonensis-and-saccharomyces-boulardii-improve-the-vaccine-immune-response-to-bovine-herpesvirus-type-5-in-sheep
#1
Talita Bandeira Roos, Carina Martins de Moraes, Régis Tuchtenhagen Sturbelle, Luana Alves Dummer, Geferson Fischer, Fábio Pereira Leivas Leite
There have been significant efforts toward the development of more efficient vaccines for animal health. A strategy that may be used to improve vaccine efficacy is the use of probiotics. Bovine herpesvirus 5 (BoHV-5) is an example of an important animal pathogen for which vaccines have provided only limited protection. In this study, we examined the use of the probiotics Bacillus toyonensis and Saccharomyces boulardii as a potential immune modulator to improve vaccine efficiency. Thirty, 5-month-old lambs were randomly grouped in three lots of 10 each and vaccinated at days 0, 21 and 42 of the experiment...
December 28, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/29331376/microrna-425-facilitates-pathogenic-th17-cell-differentiation-by-targeting-forkhead-box-o1-foxo1-and-is-associated-with-inflammatory-bowel-disease
#2
Xue Yang, Qinyu He, Zhenzhen Guo, Fei Xiong, Yi Li, Yan Pan, Caiping Gao, Liangping Li, Chong He
Inflammatory bowel disease (IBD) is a chronic autoimmune disease, and its pathogenesis remains mostly unknown. MicroRNAs (miRs) has drawn much attention as a crucial regulator of autoimmune diseases. In this study, we demonstrated, for the first time, that miR-425 was significantly up-regulated in peripheral blood mononuclear cells (PBMC) and mucosa of patients with IBD. In note, T helper (Th) 17 cells were found to be the major source of miR-425 expression. Using gain-of-function approaches, we demonstrated that miR-425 could facilitate the differentiation of CD4+ T cells into Th17 lineage...
January 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29330423/t-cell-immunity-to-zika-virus-targets-immunodominant-epitopes-that-show-cross-reactivity-with-other-flaviviruses
#3
C J Reynolds, O M Suleyman, A M Ortega-Prieto, J K Skelton, P Bonnesoeur, A Blohm, V Carregaro, J S Silva, E A James, B Maillère, M Dorner, R J Boyton, D M Altmann
Zika virus (ZIKV) Infection has several outcomes from asymptomatic exposure to rash, conjunctivitis, Guillain-Barré syndrome or congenital Zika syndrome. Analysis of ZIKV immunity is confounded by the fact that several related Flaviviruses infect humans, including Dengue virus 1-4, West Nile virus and Yellow Fever virus. HLA class II restricted T cell cross-reactivity between ZIKV and other Flaviviruses infection(s) or vaccination may contribute to protection or to enhanced immunopathology. We mapped immunodominant, HLA class II restricted, CD4 epitopes from ZIKV Envelope (Env), and Non-structural (NS) NS1, NS3 and NS5 antigens in HLA class II transgenic mice...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29329326/utilization-of-peptide-phage-display-to-investigate-hotspots-on-il-17a-and-what-it-means-for-drug-discovery
#4
Joey P Ting, Frances Tung, Stephen Antonysamy, Stephen Wasserman, Spencer B Jones, Feiyu F Zhang, Alfonso Espada, Howard Broughton, Michael J Chalmers, Michael E Woodman, Holly A Bina, Jeffrey A Dodge, Jordi Benach, Aiping Zhang, Christopher Groshong, Danalyn Manglicmot, Marijane Russell, Sepideh Afshar
To date, IL-17A antibodies remain the only therapeutic approach to correct the abnormal activation of the IL-17A/IL-17R signaling complex. Why is it that despite the remarkable success of IL-17 antibodies, there is no small molecule antagonist of IL-17A in the clinic? Here we offer a unique approach to address this question. In order to understand the interaction of IL-17A with its receptor, we combined peptide discovery using phage display with HDX, crystallography, and functional assays to map and characterize hot regions that contribute to most of the energetics of the IL-17A/IL-17R interaction...
2018: PloS One
https://www.readbyqxmd.com/read/29328499/mait-cells-are-chronically-activated-in-patients-with-autoimmune-liver-disease-and-promote-pro-fibrogenic-hepatic-stellate-cell-activation
#5
Katrin Böttcher, Krista Rombouts, Francesca Saffioti, Davide Roccarina, Matteo Rosselli, Andrew Hall, TuVinh Luong, Emmanuel A Tsochatzis, Douglas Thorburn, Massimo Pinzani
Autoimmune liver diseases (AILD) are chronic liver pathologies characterised by fibrosis and cirrhosis due to immune-mediated liver damage. In this study, we addressed the question whether mucosal-associated invariant T (MAIT) cells, innate-like T cells, are functionally altered in patients with AILD and whether MAIT cells can promote liver fibrosis through activation of hepatic stellate cells. We analysed the phenotype and function of MAIT cells from AILD patients and healthy controls by multi-colour flow cytometry and investigated the interaction between human MAIT cells and primary human hepatic stellate cells (hHSCs)...
January 12, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29324739/mansonella-perstans-microfilaremic-individuals-are-characterized-by-enhanced-type-2-helper-t-and-regulatory-t-and-b-cell-subsets-and-dampened-systemic-innate-and-adaptive-immune-responses
#6
Manuel Ritter, Winston Patrick Chounna Ndongmo, Abdel Jelil Njouendou, Nora Nganyewo Nghochuzie, Lucy Cho Nchang, Dizzle Bita Tayong, Kathrin Arndts, Norman Nausch, Marc Jacobsen, Samuel Wanji, Laura E Layland, Achim Hoerauf
The filarial nematode Mansonella perstans is endemic throughout Africa, northern South America and the Caribbean. Interestingly, M. perstans-infected individuals present no distinct clinical picture associated with certain pathology. Due to its relatively silent nature, research on this tropical disease has been neglected, especially M. perstans-driven immune responses. A hindrance in obtaining data on M. perstans-specific responses has been the inability to obtain adult worms since their habitats in serous cavities are difficult to access...
January 11, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29324259/higher-serum-vitamin-d-levels-are-associated-with-protective-serum-cytokine-profiles-in-patients-with-ulcerative-colitis
#7
John Gubatan, Shuji Mitsuhashi, Maria Serena Longhi, Talia Zenlea, Laura Rosenberg, Simon Robson, Alan C Moss
BACKGROUND & AIMS: Vitamin D has immune modulating effects on cytokines. Serum vitamin D levels are associated with the risk of relapse in patients with ulcerative colitis (UC), through unknown mechanisms. We tested the hypothesis that this beneficial role of vitamin D on UC is mediated through anti-inflammatory serum cytokine profiles. METHODS: Serum samples from a prospective cohort of seventy UC patients in clinical remission were collected and baseline histological and endoscopic scores were recorded at enrollment...
January 8, 2018: Cytokine
https://www.readbyqxmd.com/read/29319889/epitope-targeted-macrocyclic-peptide-ligand-with-picomolar-cooperative-binding-to-interleukin-17f
#8
Bert T Lai, Jeré A Wilson, Jacquie Malette Loredo, Suresh M Pitram, Nicole A LaBerge, James R Heath, Heather Agnew
The IL-17 cytokine family is associated with multiple immune and autoimmune diseases and comprises important diagnostic and therapeutic targets. We developed epitope-targeted ligands designed for differential detection of human IL-17F and its closest homologue IL-17A. Non-overlapping and unique epitopes on IL-17F and IL-17A were identified by comparative sequence analysis of the two proteins. Synthetic variants of these epitopes were utilized as targets for in situ click screens against a comprehensive library of synthetic peptide macrocycles with 5-mer variable regions...
January 10, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29317264/the-genetics-of-chronic-itch-gene-expression-in-the-skin-of-atopic-dermatitis-and-psoriasis-patients-with-severe-itch
#9
Leigh A Nattkemper, Hong Liang Tey, Rodrigo Valdes-Rodriguez, Helen Lee, Nicholas K Mollanazar, Christian Albornoz, Kristen M Sanders, Gil Yosipovitch
To identify itch-related mediators and receptors that are differentially expressed in pruritic skin, we used RNA sequencing to analyze the complete transcriptome in skin from paired itchy, lesional and non-itchy, non-lesional skin biopsies from 25 atopic dermatitis (AD) and 25 psoriasis patients and site-matched biopsies from 30 healthy controls. This analysis identified 18,000 differentially expressed genes common between itchy atopic and psoriatic skin compared to healthy skin. Of those, almost 2,000 genes were differentially expressed between itchy and non-itchy skin in atopic and psoriatic subjects...
January 6, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29314201/increased-interleukin-36%C3%AE-expression-in-skin-and-sera-of-patients-with-atopic-dermatitis-and-mycosis-fungoides-s%C3%A3-zary-syndrome
#10
Sayaka Otobe, Makoto Sugaya, Rina Nakajima, Tomonori Oka, Naomi Takahashi, Miyoko Kabasawa, Tomomitsu Miyagaki, Yoshihide Asano, Shinichi Sato
Interleukin (IL)-36γ is expressed by keratinocytes and functions as a key initiator of inflammation in the skin. IL-36γ expression is enhanced by tumor necrosis factor-α and IL-17A, having a strong association with psoriasis. In this study, we examined the role of IL-36γ in atopic dermatitis (AD) and mycosis fungoides (MF)/Sézary syndrome (SS). Serum levels of IL-36γ in AD patients and MF/SS patients were elevated compared with those of healthy controls. Importantly, serum IL-36γ levels in AD patients positively correlated with Eczema Area and Severity Index and those of MF/SS patients positively correlated with serum soluble IL-2 receptor levels...
January 3, 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29312540/cyslt1-receptor-antagonist-alleviates-pathogenesis-of-collagen-induced-arthritis-mouse-model
#11
Minwen Xu, Ruiyun Hong, Xiaoli Zhang, Hailin Zou, Yi Zhang, Zhiping Hou, Liefeng Wang
Cysteinyl leukotrienes (CysLTs) play a key role in inflammatory diseases such as asthma and their receptors' antagonists are currently used as anti-asthmatic drugs. CysLTs have also been found to participate in other inflammatory reactions. Here, we reported that in rheumatoid arthritis (RA) animals model, collagen-induced arthritis, (CIA), CysLT1, a receptor for CysLTs, was up-regulated in hind paw and lymph node, while CysLTs levels in the blood were also higher than normal mice. Montelukast, a drug targeting CysLT1, has been shown to effectively reduce the CIA incidence, peak severity, and cumulative disease scores...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29311759/comparison-of-a-microsphere-based-platform-with-a-multiplex-flow-cytometric-assay-for-determination-of-circulating-cytokines-in-the-mouse
#12
Alain Stricker-Krongrad, Catherine Shoemake, Miao Zhong, Jason Liu, Guy Bouchard
Background: Measuring expression profiles of inflammatory biomarkers is important in monitoring the polarization of immune responses; therefore, results should be independent of quantitation methods if they are to be accepted as validated clinical pathology biomarkers. To evaluate effects of differing quantitation methods, the seven major circulating Th1/Th2/Th17 cytokines interleukin 2 (IL-2), interferon γ (IFN-γ), tumor necrosis factor α (TNF-α), IL-4, IL-6, IL-10 and IL-17A were quantified in plasma of lipopolysaccharide (LPS)-treated mice with two different multiplex platforms...
2018: BMC Clinical Pathology
https://www.readbyqxmd.com/read/29311111/dual-blockade-of-interleukin-1%C3%AE-and-interleukin-17a-reduces-murine-arthritis-pathogenesis-but-also-leads-to-spontaneous-skin-infections-in-non-human-primates
#13
Melanie C Ruzek, Lili Huang, Ting Ting Zhang, Shaughn Bryant, Peter F Slivka, Carolyn A Cuff, Catherine Tripp, Guenter Blaich
Despite the efficacy of biologics for treatment of rheumatoid arthritis (RA), many patients show inadequate responses and likely require neutralization of multiple mediators. Neutralization of both interleukin (IL)-1β and IL-17A with monoclonal antibodies showed greater efficacy than either agent alone in a mouse arthritis model with cooperative inhibition of key inflammatory factors, IL-6, granulocyte colony stimulating factor (G-CSF) and CXC chemokine ligand (CXCL)1. Given the potential clinical benefit in RA, we generated a human dual variable domain antibody (DVD-Ig), ABBV-615, capable of simultaneous binding and neutralization of IL-1β and IL-17A...
January 8, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29306553/knockout-of-autophagy-gene-atg5-in-mice-vaginal-cells-abrogates-cytokine-response-and-pathogen-clearance-during-vaginal-infection-of-candida-albicans
#14
Ankit Shroff, Roicy Sequeira, Vainav Patel, K V R Reddy
The female reproductive tract (FRT) presents a unique challenge to the mucosal immune system as it needs to monitor constantly for the presence of opportunistic pathogens amidst its commensal flora. During infection, autophagy plays a critical role in pathogen clearance, presentation of antigens and production of pro-inflammatory cytokines. However, no information is available that describes the role of autophagy in mouse vaginal infection of Candida albicans. The objective of our study is to evaluate the effect of autophagy gene, ATG5 knockout in vaginal cells in response to vaginal C...
December 28, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/29306404/cerebrospinal-fluid-pentraxin-3-and-cd40-ligand-in-anti-n-menthyl-d-aspartate-receptor-encephalitis
#15
Baozhu Liu, Peiying Ai, Dong Zheng, Ying Jiang, Xiaojia Liu, Suyue Pan, Honghao Wang
Anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis is an autoimmune disorder of the central nervous system whose pathogenesis involves interleukin (IL)-6 and IL-17A. We examined the correlations between CSF concentrations of the acute-phase protein pentraxin 3 (PTX3), the chronic inflammatory mediator CD40L, IL-6, and IL-17A in anti-NMDAR encephalitis, and the impact on clinical outcome. PTX3, CD40L, IL-6, and IL-17A were significantly higher in the CSF of patients with anti-NMDAR encephalitis than in controls...
February 15, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29305258/irf-2-haploinsufficiency-causes-enhanced-imiquimod-induced-psoriasis-like-skin-inflammation
#16
Makiko Kawaguchi, Tomonori Oka, Makoto Sugaya, Hiraku Suga, Takayuki Kimura, Sohshi Morimura, Hideki Fujita, Shinichi Sato
BACKGROUNDS: IFN regulatory factor (IRF)-2 is one of the potential susceptibility genes for psoriasis, but how this gene influences psoriasis pathogenesis is unclear. Topical application of imiquimod (IMQ), a TLR7 ligand, induces psoriasis-like skin lesions in mice. OBJECTIVE: The aim of this study was to investigate whether IRF-2 gene status would influence severity of skin disease in IMQ-treated mice. METHODS: Imiquimod-induced psoriasis-like skin inflammation was assessed by clinical findings, histology, and cytokine expression...
December 28, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29302052/the-act1-d10n-missense-variant-impairs-cd40-signaling-in-human-b-cells
#17
Ning Yu, Sylviane Lambert, Joshua Bornstein, Rajan P Nair, Charlotta Enerbäck, James T Elder
The TRAF3IP2 gene resides within one of at least 63 psoriasis susceptibility loci and encodes Act1, an adapter protein involved in IL-17 receptor and CD40 signaling pathways. TRAF3IP2 is distinctive (among <10% of candidate susceptibility genes) in that a strongly disease-associated variant encodes a missense SNP predicted to be functionally relevant (SNP rs33980500 C/T encoding Act1 pD10N). As assessed by flow cytometry, Act1 protein was expressed at the highest levels in monocytes, with lower levels in T-cells and B-cells...
January 5, 2018: Genes and Immunity
https://www.readbyqxmd.com/read/29297750/a-d-alanine-auxotrophic-live-vaccine-is-effective-against-lethal-infection-caused-by-staphylococcus-aureus
#18
Miriam Moscoso, Patricia García, Maria P Cabral, Carlos Rumbo, Germán Bou
Staphylococcus aureus infections are becoming a major global health issue due to the rapid emergence of multidrug-resistant strains. Therefore, there is an urgent need to develop an effective vaccine to prevent and control these infections. In order to develop a universal immunization strategy, we constructed a mutant derivative of S. aureus 132 which lacks the genes involved in D-alanine biosynthesis, a structural component of cell wall peptidoglycan. This unmarked deletion mutant requires the exogenous addition of D-alanine for in vitro growth...
January 3, 2018: Virulence
https://www.readbyqxmd.com/read/29297452/association-between-interleukin-17-genetic-polymorphisms-and-tuberculosis-susceptibility-an-updated-meta-analysis
#19
Z-G Yu, B-Z Wang, J Li, Z-L Ding, K Wang
OBJECTIVE: To investigate the association between the genetic polymorphisms of interleukin-17 (IL-17) and susceptibility to tuberculosis (TB). METHODS: Relevant case-control studies published up to July 2017 were searched. Odds ratios (ORs) and 95% confidence intervals (CIs) were employed to estimate the association. RESULTS: Eleven articles involving 4961 TB patients and 5435 healthy controls were selected. Four polymorphic sites were identified: IL-17A rs22275913, rs3748067 and rs3819024; and IL-17F rs763780...
December 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29297273/circulating-levels-of-interleukin-17a-tumor-necrosis-factor-alpha-interleukin-18-interleukin-10-and-cognitive-performance-of-patients-with-relapsing-remitting-multiple-sclerosis
#20
Anastasiya G Trenova, Georgi S Slavov, Milena N Draganova-Filipova, Nonka G Mateva, Mariya G Manova, Lyuba D Miteva, Spaska A Stanilova
Multiple sclerosis (MS) is associated with cytokine imbalance and high rate (40-70%) of cognitive impairment. The objective of this study is to investigate the relationship between serum concentrations of tumor necrosis factor (TNF)-alpha, interleukin (IL)-17A, IL-18, IL-10, and cognitive performance in patients with relapsing-remitting MS (RRMS). Methods The study comprised 159 patients with RRMS (mean age 40.08 ± 8.48 years) in remission phase and 86 age-, gender-, and education-matched healthy controls...
January 3, 2018: Neurological Research
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